摘要
针对传统的广播发射机噪声测试方法的效率低、数据存储不便和对测试人员要求较高等缺点,提出了一种动态在线测试发射机噪声的方法,给出了系统构成和测试方法原理。通过语音端点检测算法对发射机噪声进行估计,在有声段噪声功率谱不变,无声段噪声功率根据算法谱进行更新。该测试方法实时采集发射机输入输出数据,具有更好的准确性和实时性,并通过实验仿真验证该方法的可行性。
Aiming at the shortcomings of traditional broadcast transmitter noise test methods,such as low efficiency,inconvenient data storage and high requirements for testers,a method for dynamically testing transmitter noise is presented,and the principle of system composition and test method is given.The transmitter noise is estimated by the speech endpoint detection algorithm,and the noisy segment noise power is unchanged according to the algorithm spectrum.The test method collects the input and output data of the transmitter in real time,which has better accuracy and real-time performance,and the feasibility of the method is verified by experimental simulation.
作者
李姗姗
周剑
王翾
LI SHan-shan;ZHOU Jian;WANG Xuan(ECDAV in Communication University of China,Beijing,100024,China)
出处
《中国传媒大学学报（自然科学版）》
2019年第S01期11-15,共5页
Journal of Communication University of China：Science and Technology
